In this essay we will discuss about:- 1. Meaning of Immunology 2. History of Immunology 3. Scope. Essay on the Meaning of Immunology: In the process of evolution, the body of organisms has developed the property of distinguishing "self" and "nonself", the "self" is accepted and "nonself" is rejected or degraded. For the rejection or degradation of "nonself", organisms' body [...]
The following points highlight the three main types of immunity present in humans. The types are: 1. Innate (Natural or Nonspecific) Immunity 2. Acquired (Specific or Adaptive) Immunity 3. Active and Passive Immunity. Type # 1. Innate (Natural or Nonspecific) Immunity: Innate immunity (also called nonspecific or natural immunity) refers to the inborn-ability of the body to resist, and is [...]
In this article we will discuss about the role of antibodies and antigens in humoral immunity. Role of Antibodies: Humoral immunity is antibody-mediated. It protects body from extracellular pathogenic agents by combining with them to form antigen-antibody complex, leading eventually to their elimination. The antibodies play at least in three different ways in this process of elimination of an antigenic [...]